(4x+3y=-13) * 2
(-5x+2y=-24)*3
_____________
8x+6y=-26
-
-15x+6y=-72
___________
23x=46
X=2
Answer:
1.6 cups
Step-by-step explanation:
Each batch needs 0.4 cups of sugar, and she is making 4 batches. Therefore, we can multiply 0.4 times 4 to find how much sugar is needed.
0.4*4=1.6
So, she needs 1.6 cups of sugar for 4 batches
Answer:
x = 57 y = 137
Step-by-step explanation:
x + 43 + 90 = 180
x + 43 + 90 - 90 = 180 - 90
x + 43 = 90
x + 43 - 43 = 90 - 43
x = 57
43 + y = 180
43 + y - 43 = 180 - 43
y = 137
the standard form of a quadratic is simply the equation with all variables and constant on the left-hand-side.
y = 3x² <--- general form
-3x² + y = 0 <--- standard form.
A square as four sides.
All the sides of a square are the same length
so this square has 4 sides that are each 2 inches long.
The formula for perimeter is all the sides added up.
Lets do the math:)
2 + 2 + 2 + 2 = 8
So this means that...
the perimeter of the square is 8 inches.
=)